.STC
File Extension

Having trouble opening .stc extension? Don't panic! This page explains what stc files are as well as suggests programs you may use to open stc files. You can download these programs through this page.

What is a STC file?

Stc file extension has Celestia Star Catalog file type, developed by Celestia Development Team, which is associated with the "data files" category.

Associated with Celestia, the file specifies drawing instructions for stars in the universe. It serves as part of the universe database.

In case STC files are saved to a wrong location, Celestia loads them automatically. All the custom STC, .SSC, and .DSC files must be placed inside the \extras-standard\ subdirectory of the Celestia installation.

How to open STC file?

Double click the stc file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .stc extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the stc file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open STC files

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the stc file as well. Download Universal File Viewer for your OS.